I am looking for a storage shed made of vinyl like the Rubbermaid product. I have seen the Rubbermaid shed and like it, but the largest I can find is 7'x7'. I need one larger than that. I want to keep my ridding mower in it and it is 8' long 5' wide (its a John Deere Z-Track). I would also like to keep other lawn tools and equipment in it. Thanks for any help.